LazyBrennan Donating Members 683 Member For: 13y 8m 27d Gender: Male Location: Baldivis, Wait Ages. Posted 24/05/18 01:33 PM Share Posted 24/05/18 01:33 PM Ok guys I am all out of ideas what to check. I am loosing a lot of boost. Should be getting 22 psi and only getting 11 psi. The car idles like an absolute pig and stalls. Little issues are noticed like cruise control for example, I cant actually increase speed. All things point towards a leak somewhere. We have done a compression test and leak down test on the motor and results were all good, We made a device to hook up to the intake and pumped about 30 psi through the whole system trying to hear for a leak and nothing. PCV was checked, Intake manifold gasket was all good (still fairly new and we did pull it apart to check) The actuator has been checked, Throttle body is clean and gasket fine too. Gaskets have been replaced on the turbo. I have tried using a flammable spray like brake cleaner ect around fittings to listen for a change in idle revs and nothing. Also getting the P1131 error engine light code. This engine light comes on at just normal driving speeds. I am sure there is things we have checked and I've for gotten to mention. I am completely stumped as to what else it could be. Any ideas of things to have a look at would be a massive help. Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,041 Member For: 16y 8m 9d Gender: Male Location: Melbourne Posted 24/05/18 01:36 PM Share Posted 24/05/18 01:36 PM coils? maybe a coil driver from the PCM? Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 15,972 Member For: 9y 10m 20d Gender: Male Location: South Australia Posted 24/05/18 01:40 PM Share Posted 24/05/18 01:40 PM Failed cat converter? Link to comment Share on other sites More sharing options...
LazyBrennan Donating Members 683 Member For: 13y 8m 27d Gender: Male Location: Baldivis, Wait Ages. Posted 24/05/18 01:54 PM Author Share Posted 24/05/18 01:54 PM Cats been gutted. 15 minutes ago, k31th said: coils? maybe a coil driver from the PCM? Would I still be able to get desired fuel though if that was the case? Was roll racing the other night only getting about 11-12 pounds of boost but my lambda gauge was showing a nice 0.82 the whole time. Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,041 Member For: 16y 8m 9d Gender: Male Location: Melbourne Posted 24/05/18 02:02 PM Share Posted 24/05/18 02:02 PM so it actually goes alright when you're up it? e.g only idles and cruises badly? I wouldn't trust an AFR gauge unless you've installed a separate wideband, which I assume you've done, so that doesn't matter anyway. Link to comment Share on other sites More sharing options...
LazyBrennan Donating Members 683 Member For: 13y 8m 27d Gender: Male Location: Baldivis, Wait Ages. Posted 24/05/18 02:07 PM Author Share Posted 24/05/18 02:07 PM Well it goes alright for 11 pounds of boost but it should be getting 22. The AFR gauge is a PLX one with a separate 02 sensor installed for it. Its about 2 months old. Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,041 Member For: 16y 8m 9d Gender: Male Location: Melbourne Posted 24/05/18 02:36 PM Share Posted 24/05/18 02:36 PM I'd still be checking the coils and wiring to the coils as a first step from here... Link to comment Share on other sites More sharing options...
Rab WOT? Moderating Team 10,981 Member For: 11y 9m 24d Gender: Male Location: Frankston, 3199 Posted 24/05/18 02:38 PM Share Posted 24/05/18 02:38 PM Is this the 10sec car? Link to comment Share on other sites More sharing options...
LazyBrennan Donating Members 683 Member For: 13y 8m 27d Gender: Male Location: Baldivis, Wait Ages. Posted 24/05/18 02:40 PM Author Share Posted 24/05/18 02:40 PM Yup 3 minutes ago, k31th said: I'd still be checking the coils and wiring to the coils as a first step from here... Ill have a look Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 1m 22d Gender: Male Location: Perth Posted 24/05/18 03:42 PM Share Posted 24/05/18 03:42 PM Have you checked the turbo. Sounds like your not leaking boost, the car just isn't making 22psi. What does your tuner think. Link to comment Share on other sites More sharing options...
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